Blackjack 21

Name: Blackjack 21
Rating: 4.3199105 (136894 reviews)
Author: Maple Media

Maple Media

★ 4.3 (136,894 ratings)

⬇ 1,000,000+ downloads

Est. actual: 2,101,036

Style: Casino

Free

Released: Oct 5, 2015

IAP: $1.99 - $19.99 per item

Contains ads

Rated: Teen

Mechanics Casino, slots & bingo

Signals

4 this week · 1 positive · 2 warnings All of this week's signals →

📈Last 7 days +137 installs — 39% slower than the week before (+226) · 27/day since Sep 18
🏆Among Casino games top 29% by installs gained this week (5881 peers growing)
⭐Rating steady at ★ 4.32 since Sep 18
🛠Updates dormant · updated 215 days ago

Installs since launch

+1,186 installs · -48 ratings since Sep 18

SDKs in the app · version 1.8.2, analysed Oct 7, 2026

Ad mediationAppLovin MAX ironSource / Unity LevelPlay
Ad networkAmazon Publisher Services 8.4.3 AppLovin SDK DT Exchange (Fyber)Google Mobile Ads (AdMob) 19.6.0 InMobi Meta Audience Network 6.2.0 Smaato Unity Ads 3.6.0 myTarget
AnalyticsFirebase Analytics 18.0.2
Crash reportingFirebase Crashlytics 17.3.0
Deep linkingFirebase Dynamic Links 19.1.0
Engagement & messagingFirebase Cloud Messaging 21.0.0 OneSignal
Game servicesPlay Games Services 20.0.0
PerformanceFirebase Performance Monitoring 19.0.10
Remote configFirebase Remote Config 20.0.2

9 mediation adapters

Adapters connect a mediation SDK to an ad network. An adapter alone does not mean the network’s own SDK is bundled.

AdMob mediation adapter → vungleAdMob mediation adapter → vungle 6.2.0.1AdMob mediation adapter → vungle 7.7.4.0AdMob mediation adapter → vungleAdMob mediation adapter → vungle 7.0.4.1.0AdMob mediation adapter → vungleAdMob mediation adapter → vungle 5.11.7.0AdMob mediation adapter → vungle 3.6.0.0AppLovin MAX adapter → Vungle

Found by static analysis of the app package; bundled is not the same as active. All SDKs →

Update history

1.14.0(51) Mar 31, 2026 · seen Sep 18, 2026

Thank you for updating to the latest version of Blackjack 21. Here is what's new: - 🃏 Added New “Repeat bet & deal” button for faster play - 🇲🇽 Added more language support for French🇨🇦, , Portuguese🇧🇷 , Spanish🇪🇸 , and German🇩🇪 - 🤙 Improved our in-app user support funnel - ⚙️ Made significant improvements for app stability for devices running

Only the current version so far — new entries appear as the game ships updates.

Blackjack 21 is a casino game by Maple Media with 1,000,000+ downloads (about 2.1M estimated). +137 installs in the last 7 days. Rated 4.3 from 137K ratings. Released Oct 5, 2015. Install growth, rank history, SDKs and ad networks.

From the store listing: “Play the best free Blackjack 21 game on the play store. No chip buying, just jump right in and play Blackjack completely free! Also called 21, Blackjack is one of the most popular casino games in the world. With a beautiful and intuitive design, you will love this modern take on the classic casino card game.…”